382 Communications
8x8 Inc.
Airespring, Inc.
Albany Mutual Telephone Association
Allstream Business US, LLC
Arkwest Communications
Armstrong Telecommunications, Inc
Assurance Telecom, LLC
AT&T
Atlantech Online Inc.
Bandwidth.com CLEC, LLC
Big River Telephone
Block Line Systems, LLC
Brightlink Communications LLC
Broadband Dynamics LLC
Bulloch County Rural Telephone Cooperative, Inc
Carnegie Telephone Company Inc.
Carolina Digital Phone Inc
CBTS Technology Solutions LLC
Charter Communications, Inc.
City of Faith Telephone Company
Clay County Rural Telephone Cooperative, Inc.
Clear Lake Telephone
Clear Rate Communications, Inc
Columbus Telephone Co
Comcast IP Phone, LLC
Commio
Computer Telephony Innovations Inc. dba Voxtelesys
Comtel Managed Solutions
Consolidated Communications
CORETEL VIRGINIA, LLC
Cox Communications, Inc.
CTC
Digital Agent
digitalIPvoice, Inc
Emily Cooperative Telephone Company
Fidelity Communications
FirstDigital Telecom LLC
Frontier Communications
Fusion Cloud Services, LLC
Gila River Telecommunications, Inc
Golden West Telecommunications Cooperative, Inc.
Greenfly Networks Inc dba Clearfly Communications
Hadlo Technologies, LLC
HFA Services LLC dba Call48
Home Telephone Company
IDT America, Corp
Impulse
Inteliquent
Intrado Communications, LLC
IP Networked Services, Inc
JiveTel Inc.
Logix Fiber Networks
MagicJack
Magna5, LLC
Matrix Telecom, LLC
Metro Fibernet, LLC
Midcontinent Communications
Midstate Communications
Mix Networks, Inc.
Monon Telephone Company Inc.
Muenster Telephone Corp. of Texas
Multitel LLC.
New Paris Telephone
NineStar Connect
Noble Systems Communications LLC
Northeast Communications of Wisconsin INC
NOS Communications / ANI Networks
Nunn Telephone Company
Optivon, Inc.
Peeringhub Inc
Peerless Network, Inc.
Pioneer Telephone COOP
Piratel LLC
PNG Telecommunications Inc
POPP.com, Inc dba POPP Communications
PTI Pacifica Inc. Dba IT&E
Quality Voice & Data Inc.
Quantum Telecommunications, Inc.
Rainbow Communications
RCLEC, INC.
ReInvent Telecom LLC
Ritter Communications
Sandhill Telephone Coop
Santel Communications Cooperative, Inc.
Simwood Inc.
SkyLine Telephone Membership Corp
Smartedgenet, LLC
Socket Telecom LLC
South Dakota Network, LLC
Southern Communications Services, Inc. dba Southern Linc
T3 Communications, Inc.
TDS Telecommunications
Technology Innovation Lab
Teliax Inc.
TelNet Worldwide, Inc.
Telnyx LLC
Terra Nova Telecom Inc
The Park Region Mutual Tel
The Pioneer Telephone Association, Inc.
Threshold Communications, Inc.
Tim Ron Enterprises, LLC
T-Mobile
TrioTel Communications Inc
TRUSTID, Inc.
Twilio International, Inc.
U.S. Cellular
U.S. TelePacific Corp.
USA Digital Communications, Inc.
Venture Communications Cooperative
Veracity Networks LLC
Verizon Communications Inc.
VoIP Innovations
Vonage
Wabash Telephone Cooperative, Inc.
WEST RIVER COOPERATIVE TELEPHONE COMPANY, INC.
Whidbey Telephone Company
Winn Telecom
Winnebago Cooperative Telecom Association
WOODSTOCK COMMUNICATIONS